561630244 has 12 divisors (see below), whose sum is σ = 1123260544. Its totient is φ = 240698664.

The previous prime is 561630161. The next prime is 561630271. The reversal of 561630244 is 442036165.

561630244 is an admirable number.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10029084 + ... + 10029139.

Almost surely, 2^561630244 is an apocalyptic number.

It is an amenable number.

561630244 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561630244 is a wasteful number, since it uses less digits than its factorization.

561630244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20058234 (or 20058232 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 561630244 is about 23698.7392913632. The cubic root of 561630244 is about 825.0561303714.

The spelling of 561630244 in words is "five hundred sixty-one million, six hundred thirty thousand, two hundred forty-four".